Because so much of Nitro went up around 1958, the openers we pull out of these garages are often the second or third unit installed on the same original track and header bracket - chain-drive units from a manufacturer that stopped making replacement gear sets a long time ago. We carry universal logic boards, standard safety-sensor kits, and chain and belt stock that fit most of what's out there now, but a true period-correct drive gear for a unit that old sometimes has to be sourced special, and that can add a day or two to a job. We tell the homeowner that up front rather than promise a same-visit fix we can't back up.
What we don't stock is obsolete wall-console wiring from the 1950s and 60s - the kind with cloth-sheathed low-voltage leads instead of modern bell wire. If your garage still has that, we replace the run rather than patch it, because patching that wire is a fire risk, not a repair.